<?
echo "这可能跟XML有冲突<br />";
?>

<?php
echo "推荐写法<br />";
?>

<script language="php">
echo "这样也行哦！<br />";
</script>

<% 
echo "类似ASP写法，只不过得在PHP.ini中配置<br />";

%>

<?php

echo "<hr/>";
//C风格
/*多行*/
#Unix风格
//echo 和print的区别就是，print只可以同时输出一个字符串
$a = "hello";
$b = "world";
echo "a","b";
print "a";




?>